<template>
  <div class="pay">
    <Header title="在线支付"/>
    <div class="main" v-if="orderInfo">
      <div class="tip">
        <p class="countdown-title">支付剩余时间</p>
        <h3 class="countdown-text">{{countDown}}</h3>
      </div>
      <section class="home">
        <ul class="list info-list">
          <li>
            <span class="order-name">{{orderInfo.shopInfo.name}}</span>
            <span class="text-highlight">¥{{totalPrice}}</span>
          </li>
        </ul>
        <div class="title">在线支付</div>
        <ul class="list payment-list">
          <li class="payment-list-item">
            <div class="icon">
              <img src="../../assets/wechart.jpg" alt>
              <span>微信</span>
            </div>
            <i class="fa fa-check-circle selected"></i>
          </li>
        </ul>
      </section>
      <button @click="pay" :disabled="timeOut" class="btn-submit">确认支付</button>
    </div>
  </div>
</template>

<script>
import Header from '../../components/Header.vue'

export default ({
  name: 'Pay',
  data () {
    return {
      countDown: "00:15:00",
      timer: null,
      timeout: false
    }
  },
  components: {
    Header
  },
  beforeRouteEnter (to,from,next) {
    next(vm => {
      vm.countTimeDown()
    })
  },
  computed: {
    orderInfo () {
      return this.$store.getters.orderInfo
    },
    totalPrice () {
      return this.$store.getters.totalPrice
    },
    userInfo () {
      return this.$store.getters.userInfo
    },
    remarkInfo () {
      return this.$store.getters.remarkInfo
    }
  },
  methods: {
    countTimeDown () {
      let minute = 14
      let second = 59

      this.timer = setInterval(() => {
        second--

        if (minute == '00' && second == '00') {
          this.countDown = '订单已超时'
          clearInterval(this.timer)
          this.timeout = true
          return 
        }

        if (second == '00') {
          second = 59
          minute--

          if (minute < 10) {
            minute = '0' + minute
          }
        }

        if (second > 10) {
          second = '0' + second
        }

        this.countDown = '00:' + minute + ':' + second
      }, 1000)
    },
    pay () {
      const data = {
        body: '饿了么',
        out_trade_no: new Date().getTime().toString(),
        total_fee: 1
      }

      // 请求 http://www.thenewstep.cn/wxzf/example/jsapi.php
      fetch('http://www.thenewstep.cn/wxzf/example/jsapi.php', {
        method: 'POST',
        headers: {
          'Content-type': 'application/json'
        },
        body: JSON.stringify(data)
      }).then(res => res.json())
      .then(data => {
        this.onBridgeReady(data)
      }).catch(err => {
        alert('请求失败')
      })
    },
    onBridgeReady (data) {
      WeixinJSBridge.invoke("getBrandWCPayRequest", data, res => {
        if (res.err_msg == "get_brand_wcpay_request:ok") {
          // 使用以上方式判断前端返回,微信团队郑重提示：
          //res.err_msg将在用户支付成功后返回ok，但并不保证它绝对可靠。
          alert("支付成功")
          // 生成订单
          this.addOrder()
        }
      })
    },
    addOrder () {
      let orderList = {
        orderInfo: this.orderInfo,
        userInfo: this.userInfo,
        totalPrice: this.totalPrice,
        remarkInfo: this.remarkInfo
      }
      // console.log(this.orderList)

      this.$axios.post(`/api/user/add_order/${localStorage.ele_login}`, orderList).then(res => {
        console.log(res.data)
        this.$router.push('/order')
      })
    }
  }
})
</script>

<style scoped>
.pay {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding-top: 45px;
}

.main {
  width: 100%;
  height: 100%;
  overflow: auto;
  box-sizing: border-box;
}
.tip {
  display: block;
  text-align: center;
  background-color: #fff;
  color: #333;
  padding: 2rem;
  line-height: 2rem;
}
countdown-title {
  font-size: 0.88rem;
  color: #999;
}
.countdown-text {
  height: 2rem;
  color: #333;
  font-size: 1.8rem;
}
down-text {
  height: 2rem;
  color: #333;
  font-size: 1.8rem;
}
.list {
  border-bottom: 0.5px solid #eee;
  background: #fff;
}
.info-list {
  padding: 0 1.5rem;
}
.info-list li {
  border-top: 0.5px solid #eee;
  display: flex;
  padding: 1.5rem 0;
  font-size: 1rem;
  line-height: 1rem;
  justify-content: space-between;
}
.info-list li .order-name {
  color: #333;
  display: inline-block;
  vertical-align: bottom;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-right: 16px;
  max-width: 60%;
}
.text-highlight {
  color: #ff6000;
}
.title {
  background-color: #f5f5f5;
  font-size: 0.88rem;
  padding: 1.2rem 1.2rem 1rem;
  color: #999;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.payment-list-item {
  border-bottom: 0.5px solid #eee;
  padding: 0.9rem 1rem;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.icon {
  display: flex;
  align-items: center;
}
.payment-list-item img {
  width: 2.4rem;
  height: 2.4rem;
  margin-right: 20px;
}
.payment-list-item > i {
  font-size: 1.5rem;
  color: #eee;
}
.selected {
  color: #4cd964 !important;
}
.btn-submit-wrap {
  margin: 1rem auto;
  width: 90%;
}
.btn-submit {
  font-size: 1.1rem;
  line-height: 1.5rem;
  background-color: #4cd964;
  width: 100%;
  outline: none;
  border: none;
  color: #fff;
  border-radius: 5px;
  padding: 0.5rem;
  box-sizing: border-box;
}

/* 不可点击btn */
.btn-submit[disabled] {
  background-color: #bbb !important;
}
</style>
